Content for TR 23.724 Word version: 16.1.0
6.18 Solution 18: QoS control for unstructured PDU sessions
6.19 Solution 19: 5GS UP Optimization for Infrequent Small Data Transmission
6.20 Solution 20: NIDD API support by SMF for infrequent small data transfer via NAS-SM
6.21 Solution 21: NIDD service activation
6.22 Solution 22: eDRX for CM-IDLE state in 5GS
6.23 Solution 23: MICO Mode Management for Expected Application Behaviour
6.24 Solution 24: High latency communication with extended buffering and event notifications
6.25 Solution 25: HLCom buffering and event notification support for CM-IDLE
6.26 Solution 26: Expected UE Behaviour provisioning for CIoT
6.27 Solution 27: Reuse of EPS Overload Control Mechanisms
6.28 Solution 28: SMF assisted NG-RAN information
6.29 Solution 29: User Plane data transmission with ConnectionLess signalling
6.30 Solution 30: NEF based infrequent small data transfer via NAS-SM
6.31 Solution 31: Deferring of Periodic Registration Update
6.32 Solution 32: MO Data Buffering in the UE
6.33 Solution 33: Delayed Paging Response
6.34 Solution 34: Provisioning of UE TX power saving parameters
6.35 Solution 35: Small data delivery
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6.18 Solution 18: QoS control for unstructured PDU sessions p. 118
6.18.1 Introduction p. 118
6.18.2 Functional Description p. 118
6.18.2.1 QoS Flow mapping for unstructured PDU Session p. 118
6.18.2.2 QoS Rule for Unstructured PDU Session p. 119
6.18.2.3 Field position based Packet Filters p. 119
6.18.3 Support of EPC interworking p. 120
6.18.4 Procedures p. 120
6.18.5 Impacts on existing entities and interfaces p. 122
6.18.6 Evaluation p. 122
6.19 Solution 19: 5GS UP Optimization for Infrequent Small Data Transmission p. 122
6.19.1 Introduction p. 122
6.19.2 Functional Description p. 124
6.19.3 Support of EPC Interworking p. 124
6.19.4 Procedures p. 125
6.19.4.1 PDU Session Establishment p. 125
6.19.4.2 UL data transmission from CM-IDLE p. 126
6.19.4.2b UL data transmission from CM-IDLE with Early Data Transmission p. 127
6.19.4.3 DL data transmission p. 128
6.19.4.4 Connection Suspend procedure p. 130
6.19.4.5 CN-initiated UP Deactivation procedure p. 130
6.19.5 Impacts on existing entities and interfaces p. 132
6.19.6 Evaluation p. 132
6.20 Solution 20: NIDD API support by SMF for infrequent small data transfer via NAS-SM p. 133
6.20.1 Introduction p. 133
6.20.1.1 General p. 133
6.20.1.2 Architecture reference models p. 133
6.20.2 Functional Description p. 134
6.20.3 Support of EPC interworking p. 134
6.20.4 Procedures p. 135
6.20.4.1 PDU Session Establishment (non-roaming) p. 135
6.20.4.2 PDU Session Establishment (home-routed roaming) p. 136
6.20.4.3 Mobile Originated Data Transport via NAS-SM and NIDD API p. 137
6.20.4.4 Mobile Terminated Data Transport via NAS-SM and NIDD API p. 138
6.20.4.5 NIDD configuration procedure p. 140
6.20.5 Impacts on existing entities and interfaces p. 142
6.20.6 Evaluation p. 142
6.21 Solution 21: NIDD service activation p. 142
6.21.1 Introduction p. 142
6.21.2 Functional Description p. 143
6.21.2.1 General p. 143
6.21.2.2 Mobility p. 143
6.21.3 Support of EPC Interworking p. 143
6.21.4 Procedures p. 143
6.21.4.1 NIDD service activation for AMF based solution p. 143
6.21.4.2 NIDD service activation for SMF based solution p. 145
6.21.4.3 Bulk subscription of NIDD service activation p. 146
6.21.5 Impacts on existing entities and interfaces p. 147
6.21.6 Evaluation p. 147
6.22 Solution 22: eDRX for CM-IDLE state in 5GS p. 147
6.22.1 Introduction p. 147
6.22.2 Functional Description p. 147
6.22.3 Support of EPC interworking p. 148
6.22.4 Procedures p. 148
6.22.5 Impacts on existing entities and interfaces p. 148
6.22.6 Evaluation p. 148
6.23 Solution 23: MICO Mode Management for Expected Application Behaviour p. 148
6.23.1 Introduction p. 148
6.23.2 Functional Description p. 149
6.23.3 Support of interworking p. 149
6.23.4 Procedures p. 149
6.23.5 Impacts on existing entities and interfaces p. 150
6.23.6 Evaluation p. 150
6.24 Solution 24: High latency communication with extended buffering and event notifications p. 151
6.24.1 Introduction p. 151
6.24.2 Functional Description p. 151
6.24.3 Support of EPC interworking p. 152
6.24.4 Procedures p. 152
6.24.4.1 Extended buffering p. 152
6.24.4.1.1 General p. 152
6.24.4.1.2 DL data in CM-IDLE mode p. 152
6.24.4.1.3 DL data in CM-CONNECTED mode without CN extended buffering p. 154
6.24.4.1.4 DL data in CM-CONNECTED mode with CN Extended buffering p. 154
6.24.4.2 Notification procedures p. 156
6.24.4.2.1 General p. 156
6.24.4.2.2 Event Subscription and Notification of UE reachability p. 156
6.24.4.2.3 Notification of Availability after DDN failure p. 157
6.24.4.2.4 Configuration for notification related approaches p. 160
6.24.4.3 Notification of Availability after MT control plane signalling p. 161
6.24.5 Impacts on existing entities and interfaces p. 163
6.24.6 Evaluation p. 164
6.25 Solution 25: HLCom buffering and event notification support for CM-IDLE p. 165
6.25.1 Introduction p. 165
6.25.2 Functional Description p. 165
6.25.3 Support of EPC interworking p. 165
6.25.4 Procedures p. 165
6.25.4.1 Extended data buffering at UPF p. 165
6.25.4.1A Extended data buffering at NEF p. 167
6.25.4.2 AF notification from AMF p. 167
6.25.4.2.1 General p. 167
6.25.4.2.2 Event Subscription of UE reachability p. 167
6.25.4.2.3 MT data transfer with Notification of UE availability p. 167
6.25.4.2.4 Event Subscription of "Availability Notification after DDN Failure" p. 168
6.25.4.2.5 Notification about "Availability Notification after DDN Failure" p. 168
6.25.4.3 AF notification from SMF p. 168
6.25.5 Impacts on existing entities and interfaces p. 172
6.25.6 Evaluation p. 172
6.26 Solution 26: Expected UE Behaviour provisioning for CIoT p. 172
6.26.1 Introduction p. 172
6.26.2 Functional Description p. 173
6.26.3 Support of EPC interworking p. 174
6.26.4 Procedures p. 174
6.26.5 Impacts on existing entities and interfaces p. 174
6.26.6 Evaluation p. 175
6.27 Solution 27: Reuse of EPS Overload Control Mechanisms p. 175
6.27.1 Introduction p. 175
6.27.2 Functional Description p. 175
6.27.2.1 Small Data Rate Control p. 175
6.27.2.2 Service Gap Control p. 175
6.27.2.3 AMF and SMF Overload p. 175
6.27.2.4 Control plane data back-off timer p. 176
6.27.2.5 Low Access Priority p. 176
6.27.3 Support of EPC interworking p. 176
6.27.4 Procedures p. 176
6.27.4.1 Small Data Rate Control p. 176
6.27.4.1.1 General p. 176
6.27.4.2 Service Gap Control p. 177
6.27.4.2.1 General p. 177
6.27.4.3 Overload procedure p. 177
6.27.4.3.1 General p. 177
6.27.4.4 Low access priority p. 177
6.27.4.4.1 General p. 177
6.27.4.5 Control plane data back-off timer procedure p. 177
6.27.5 Impacts on existing entities and interfaces p. 177
6.27.6 Evaluation p. 178
6.28 Solution 28: SMF assisted NG-RAN information p. 178
6.28.1 Introduction p. 178
6.28.2 Functional Description p. 178
6.28.3 Support of EPC interworking p. 179
6.28.4 Procedures p. 179
6.28.5 Impacts on existing entities and interfaces p. 181
6.28.6 Evaluation p. 182
6.29 Solution 29: User Plane data transmission with ConnectionLess signalling p. 182
6.29.1 Introduction p. 182
6.29.2 Functional Description p. 182
6.29.3 Support of EPC interworking p. 186
6.29.4 Procedures p. 186
6.29.4.1 Identities p. 186
6.29.4.2 Assumptions p. 186
6.29.4.3 Procedures p. 186
6.29.4.3.1 Set-up of a PDU sessions with Connectionless mode data transfer on the RAN-Core interface p. 186
6.29.4.3.2 UE connectionless uplink data transfer p. 189
6.29.4.3.3 UE connectionless downlink data transfer p. 190
6.29.4.3.4 Paging for UE connectionless downlink data transfer p. 192
6.29.4.3.5 Mobility support p. 193
6.29.4.4.6 UPF Triggered Release and Redirection During UE Connectionless Active Mode p. 193
6.29.5 Impacts on existing entities and interfaces p. 194
6.29.5.1 Impact on interfaces p. 194
6.29.5.2 Impact on entities p. 194
6.29.6 Evaluation p. 194
6.30 Solution 30: NEF based infrequent small data transfer via NAS-SM p. 194
6.30.1 Introduction p. 194
6.30.1.1 General p. 194
6.30.1.2 Architecture reference models p. 195
6.30.2 Functional Description p. 196
6.30.3 Support of EPC interworking p. 196
6.30.4 Procedures p. 197
6.30.4.1 PDU Session Establishment (non-roaming) p. 197
6.30.4.2 PDU Session Establishment (home-routed roaming) p. 198
6.30.4.3 Mobile Originated Data Transport via NAS-SM and N6 (NEF Anchored) p. 200
6.30.4.4 Mobile Terminated Data Transport via NAS-SM and N6 (NEF Anchored) p. 200
6.30.4.5 NIDD Configuration for Data Transport via NAS-SM p. 200
6.30.4.6 SMF-NEF Connection p. 200
6.30.4.7 NIDD Configuration by NEF p. 201
6.30.5 Impacts on existing entities and interfaces p. 202
6.30.6 Evaluation p. 202
6.31 Solution 31: Deferring of Periodic Registration Update p. 202
6.31.1 Introduction p. 202
6.31.2 Functional Description p. 202
6.31.3 Support of interworking p. 203
6.31.4 Procedures p. 203
6.31.5 Impacts on existing entities and interfaces p. 203
6.31.6 Evaluation p. 204
6.32 Solution 32: MO Data Buffering in the UE p. 204
6.32.1 Introduction p. 204
6.32.2 Functional Description p. 204
6.32.3 Support of EPC interworking p. 204
6.32.4 Procedures p. 204
6.32.5 Impacts on existing entities and interfaces p. 205
6.32.6 Evaluation p. 205
6.33 Solution 33: Delayed Paging Response p. 205
6.33.1 Introduction p. 205
6.33.2 Functional Description p. 206
6.33.3 Support of EPC interworking p. 206
6.33.4 Procedures p. 206
6.33.5 Impacts on existing entities and interfaces p. 207
6.33.6 Evaluation p. 208
6.34 Solution 34: Provisioning of UE TX power saving parameters p. 208
6.34.1 Introduction p. 208
6.34.2 Functional Description p. 208
6.34.3 Support of EPC interworking p. 209
6.34.4 Procedures p. 209
6.34.5 Impacts on existing entities and interfaces p. 209
6.34.6 Evaluation p. 209
6.35 Solution 35: Small data delivery p. 209
6.35.1 Introduction p. 209
6.35.2 Functional Description p. 209
6.35.2.1 Architecture p. 209
6.35.2.2 Small data delivery p. 211
6.35.3 Support of EPC interworking p. 212
6.35.4 Procedures p. 212
6.35.5 Impacts on existing entities and interfaces p. 215
6.35.6 Evaluation p. 215
